   Chapter 13, Problem 98CWP

Chapter
Section
Textbook Problem

# For the following endothermic reaction at equilibrium: 2 SO 3 ( g ) ⇌ 2 SO 2 ( g ) + O 2 ( g ) which of the following changes will increase the value of K?a. increasing the temperatureb. decreasing the temperaturec. removing SO3(g) (constant T)d. decreasing the volume (constant T)e. adding Ne(g) (constant T)f. adding SO2(g) (constant T)g. adding a catalyst (constant T)

(a)

Interpretation Introduction

Interpretation: To increase the value of equilibrium constant for the given reaction the different effects are to be analyzed.

Concept introduction: The equilibrium constant describes the ratio of the reactant to the product on the equilibrium conditions in terms of the concentrations.

Law of mass action is applicable on the equilibrium reactions.

Le Chatelier’s principle states that the change in any factor such as temperature, pressure, concentration and catalyst shifts the direction of equilibrium which nullifies the relative effect.

The Le Chatelier’s principle tells that the equilibrium constant of an endothermic reaction is always increases with increase in temperature and decreases with decrease in temperature.

To determine: If the value of equilibrium constant increases with an increase in temperature.

Explanation

Explanation

With increase in the temperature the value of equilibrium constant increases.

Given

The reaction is given as,

2SO3(g)2SO2(g)+O2(g)

This is an endothermic reaction.

In terms of heat the above reaction is written as,

Heat+2SO3(g)2SO2(g)+O2(g)

Heat is consumed here. Heat is represent by ΔH that is enthalpy change. For the endothermic reaction the value of ΔH is always positive

(b)

Interpretation Introduction

Interpretation: To increase the value of equilibrium constant for the given reaction the different effects are to be analyzed.

Concept introduction: The equilibrium constant describes the ratio of the reactant to the product on the equilibrium conditions in terms of the concentrations.

Law of mass action is applicable on the equilibrium reactions.

Le Chatelier’s principle states that the change in any factor such as temperature, pressure, concentration and catalyst shifts the direction of equilibrium which nullifies the relative effect.

The Le Chatelier’s principle tells that the equilibrium constant of an endothermic reaction is always increases with increase in temperature and decreases with decrease in temperature.

To determine: If the value of equilibrium constant increases with a decrease in temperature.

(c)

Interpretation Introduction

Interpretation: To increase the value of equilibrium constant for the given reaction the different effects are to be analyzed.

Concept introduction: The equilibrium constant describes the ratio of the reactant to the product on the equilibrium conditions in terms of the concentrations.

Law of mass action is applicable on the equilibrium reactions.

Le Chatelier’s principle states that the change in any factor such as temperature, pressure, concentration and catalyst shifts the direction of equilibrium which nullifies the relative effect.

The Le Chatelier’s principle tells that the equilibrium constant of an endothermic reaction is always increases with increase in temperature and decreases with decrease in temperature.

To determine: If the value of equilibrium constant increases with removing SO3(g) at constant temperature.

(d)

Interpretation Introduction

Interpretation: To increase the value of equilibrium constant for the given reaction the different effects are to be analyzed.

Concept introduction: The equilibrium constant describes the ratio of the reactant to the product on the equilibrium conditions in terms of the concentrations.

Law of mass action is applicable on the equilibrium reactions.

Le Chatelier’s principle states that the change in any factor such as temperature, pressure, concentration and catalyst shifts the direction of equilibrium which nullifies the relative effect.

The Le Chatelier’s principle tells that the equilibrium constant of an endothermic reaction is always increases with increase in temperature and decreases with decrease in temperature.

To determine: If the value of equilibrium constant increases with decreasing the volume at constant temperature.

(e)

Interpretation Introduction

Interpretation: To increase the value of equilibrium constant for the given reaction the different effects are to be analyzed.

Concept introduction: The equilibrium constant describes the ratio of the reactant to the product on the equilibrium conditions in terms of the concentrations.

Law of mass action is applicable on the equilibrium reactions.

Le Chatelier’s principle states that the change in any factor such as temperature, pressure, concentration and catalyst shifts the direction of equilibrium which nullifies the relative effect.

The Le Chatelier’s principle tells that the equilibrium constant of an endothermic reaction is always increases with increase in temperature and decreases with decrease in temperature.

To determine: If the value of equilibrium constant increases with the addition of Neon gas at constant temperature.

(f)

Interpretation Introduction

Interpretation: To increase the value of equilibrium constant for the given reaction the different effects are to be analyzed.

Concept introduction: The equilibrium constant describes the ratio of the reactant to the product on the equilibrium conditions in terms of the concentrations.

Law of mass action is applicable on the equilibrium reactions.

Le Chatelier’s principle states that the change in any factor such as temperature, pressure, concentration and catalyst shifts the direction of equilibrium which nullifies the relative effect.

The Le Chatelier’s principle tells that the equilibrium constant of an endothermic reaction is always increases with increase in temperature and decreases with decrease in temperate

To determine: If the value of equilibrium constant increases with the addition of SO2(g) gas at constant temperature.

(g)

Interpretation Introduction

Interpretation: To increase the value of equilibrium constant for the given reaction the different effects are to be analyzed.

Concept introduction: The equilibrium constant describes the ratio of the reactant to the product on the equilibrium conditions in terms of the concentrations.

Law of mass action is applicable on the equilibrium reactions.

Le Chatelier’s principle states that the change in any factor such as temperature, pressure, concentration and catalyst shifts the direction of equilibrium which nullifies the relative effect.

The Le Chatelier’s principle tells that the equilibrium constant of an endothermic reaction is always increases with increase in temperature and decreases with decrease in temperature.

To determine: If the value of equilibrium constant increases with the addition of catalyst at constant temperature

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